Children play dodgeball at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Sam McDermott, 12, of New Milford, dunks a basketball at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Lucas Davies, 11, of Stamford, flips into the foam pit at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Kyle Ruddy, 8, of Newtown, catches a ball during a game of dodgeball at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Campbell Mattus, 10, of Fairfield, does a gymnastics trick on a trampoline at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Sorcha Maddison, 13, of Westport, makes a catch during a game of dodgeball at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Kids jump while playing a game of dodgeball at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

Ryan Ruddy, 10, of Newtown, flips into the foam pit at Sky Zone indoor trampoline park in Bethel, Conn. Wednesday, Aug. 13, 2014. There have been a number of trampoline parks making their way into southwestern Connecticut recently.

As the rain ceased outside, Kelly Caruso tried to dodge the balls coming at her while jumping up and down on one of the indoor trampolines at Rockin' Jump on Trefoil Drive in Trumbull.

Nearby, the 6-year-old's father watched, as children of all ages ran past him on their way to the dunk trampoline, the foam pit trampoline and the free jump area.

"It's good exercise for the kids," said Gregory Caruso, of Shelton, who wore a bracelet that allowed him to jump as well. "With the rain it gets boring. It's better than playing Xbox."

For Kelly and her brother Michael, 10, there was a more simple reason why attending the trampoline park was a good idea on the dreary day.

"I just think it's really fun," Kelly said.

It's a sentiment companies like Rockin' Jump, which opened in May, are counting on for success as more businesses take the leap by opening trampoline parks in southwestern Connecticut.

In February, Sky Zone Indoor Trampoline Park opened its doors on Francis J. Clarke Circle in Bethel, the first Fairfield County location for the company. It also has Connecticut locations in New Haven, Wallingford and Hartford.

Stamford's Chelsea Piers Connecticut also has a trampoline room in its facility, in addition to a rock climbing wall.

Shay Grogan, assistant director of gymnastics at Chelsea Piers, said she thinks trampolines are being seen more often now because they are now safer than they've ever been, with inground structures and softer landing surfaces.

"I think they've come up with greater methods of using them so it's been easier for places and gyms to have them," she said.

Erica Bates Schietinger, a spokesperson for Chelsea Piers, said the area lends itself to fitness-based recreation. "Fairfield County has a lot of adults and children who are interested in health and fitness and a healthy lifestyle," she said.

At Rockin' Jump, the idea for a trampoline park originated out of 10-year-old Lily Rodier's love of the sport. The youngster fell in love with the trampoline the first time she jumped on it, said her mother Roni Rodier, who is math department head at Stratford High School.

"Lily tried it once and it was like there was no going back. She was in love," she said.

For the last several years, Lily has been a competitive trampolinist. But she also enjoyed jumping in her spare time.

"We noticed everyone just really enjoyed playing with her," said Rodier. "We did some research and found trampoline parks are extremely popular out west. So we just went for it."

Her husband, Steven, had always wanted to open some type of recreational center.

"It takes a lot of time to find the right community, the right building and the right time," Rodier said. "Not only do you need to have very high ceilings to make sure you build your park safely, but you need parking."

The family, which is from Fairfield, said Trumbull and the Trefoil Drive location were the perfect fit.